MATLAB: Combine arrays to form another arrays

arraysmatrix array

Hello, can we combine many arrays into another arrays?
for example:
    k = 5;
    for u=1:k
       H(:,:,u)=randn(M,N)+j*randn(M,N); 
    end
    for u=1:k 
       Hi(:,:,1)=[H(:,:,2);H(:,:,3);H(:,:,4);H(:,:,5)];
       Hi(:,:,2)=[H(:,:,1);H(:,:,3);H(:,:,4);H(:,:,5)];
       Hi(:,:,3)=[H(:,:,1);H(:,:,2);H(:,:,4);H(:,:,5)];
       Hi(:,:,4)=[H(:,:,1);H(:,:,2);H(:,:,3);H(:,:,5)];
       Hi(:,:,5)=[H(:,:,1);H(:,:,2);H(:,:,3);H(:,:,4)];
    end
what if k=19, should I repeat all the steps. Are there other simpler programs to combine it. Thank you

Best Answer

 H = randn(M, N, k) + j*randn(M, N, k);   %no need for loop
 c = num2cell(H, [1 2]);                  %split H into cell array along 3rd dimension
 for u=1:k
     indices = [1:u-1 u+1:k];             %get numbers 1:k without u
     Hi(:, :, u) = vertcat(c{indices});   %use cell array to comma separated list expansion to feed vertcat
 end
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